In what way are the humerus and the femur similar? An x-ray of the human body showing the humerus and femur bones A. They both a
ttach their respective limbs to the axial skeleton. B. They both have similar joints at each end. C. They both are extremely strong and made only of compact bone. D. They both have hollow spaces filled with bone-generating cells. E. They both protect vital organs.
HIV virus is an example of enveloped virus, that has the ability to infect a host cell by attaching itself to it and fusing with the host cell. Once infected, the virus leaves the host cell and moves to another cells to infect them. The HIV virus contains glycoprotein spikes to attach to the host cell.